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- Using the EXTERN keyword
- File description
- Limitations
HDBDescribeFile (Function) In french: HDBDécritFichier
  Available only with these kinds of connection
Describes a data file in dBase3 format (most common format) through programming. This function is used to specify the name, abbreviation and access path of xBase file. HDBDescribeFile("DBCUSTOMER", "CD", "C:\FILE\CUSTOMER.DBF")
HDBDescribeField("LASTNAME,C,20")
HDBDescribeField("FIRSTNAME,C,20")
HDBDescribeField("AGE,N,3,0")
HDBDescribeField("BALANCE,N,10,2")
HDBDescribeField("MARRIED,L")
HDBDescribeField("DOB,D")
HDBDescribeField("INFO,M")
HDBCreation()
Syntax
<Result> = HDBDescribeFile(<Logical name of xBase file> , <File prefix> , <Full name of physical file>)
<Result>: Boolean - True if the operation was performed,
- False if a problem occurs. HError is used to identify the error.
<Logical name of xBase file>: Character string Logical name of xBase file to create. This name will be used by all the functions that handle xBase files. <File prefix>: Character string File abbreviation (2 characters). <Full name of physical file>: Character string Path where the file will be created on disk and full file name (with the extension). Remarks We recommend that you use the EXTERN keyword to declare a file that will be described and created, in order to avoid warnings in the code editor. For example: EXTERN Customer
HDBDescribeFile("CUSTOMER", "DA", "C:\FILE\CUSTOMER.DBF")
- An error 1009 will be generated if the file is already opened during the call to HDBDescribeFile.
- The file will be created on disk by HDBCreation.
- The file structure is described by HDBDescribeField. The number of items created in a file is limited to 128.
- The indexes are described by HDBDescribeIndex.
- This function is not available when using a database via Remote Access.
- This function is not available when using a stand-alone executable.
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